Browsing by Author "Fernandes, Rafael Valente"
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- CFD Analysis of Alcohol-to-Jet Fuel Combustion in a CFM56-3 CombustorPublication . Fernandes, Rafael Valente; Brojo, Francisco Miguel Ribeiro ProençaThe aviation industry’s heavy reliance on fossil fuels significantly contributes to polluting emissions, exacerbating global warming and degrading air quality, prompting the urgent need for sustainable alternatives. One promising solution is the use of Sustainable Aviation Fuels (SAFs), which offer a viable alternative to conventional jet fuel. Among them, Alcohol-to-Jet Synthetic Paraffinic Kerosene (ATJ-SPK), a bio-derived fuel, has shown potential to reduce aviation’s environmental impact. This study presents a Computational Fluid Dynamics (CFD) analysis of ATJ-SPK combustion in a CFM56-3 combustor using ANSYS Fluent, employing the Reynolds Stress Model (RSM) as the viscous model. The research focuses on comparing the emissions of ATJ-SPK with those of conventional Jet A fuel while assessing ATJ-SPK’s viability as a drop-in replacement. The analysis was conducted across the power settings of the ICAO Landing and Take-Off (LTO) cycle, evaluating key combustion characteristics such as temperature distribution, emissions, and efficiency. Results indicate that ATJ-SPK exhibits similar combustion behaviour to Jet A, demonstrating its potential as a sustainable alternative fuel. Notably, NOx emissions show a reduction across all power settings, particularly at full power, suggesting environmental benefits. CO emissions, however, require further validation due to inconclusive trends. Importantly, the simulation results align well with experimental data, particularly in key parameters like outlet temperature, reinforcing the reliability of the CFD approach. These findings support the feasibility of ATJ-SPK as a viable replacement for conventional jet fuel, contributing to aviation’s transition toward sustainability.